using System.Collections;
using System.Collections.Generic;
using Animancer;
using AYellowpaper.SerializedCollections;
using BITKit;
using BITKit.Entities;
using UnityEngine;

namespace BITFALL.Movement.MotionBased
{
	public class MotionBasedBehavior : EntityBehavior
	{
		[SerializeField] private AnimancerComponent animancerComponent;
		[SerializeField] private SerializedDictionary<string, AnimationClip[]> animationClips;
		[SerializeField] private SerializedDictionary<string,int> layerIndex;
		[SerializeField] private SerializedDictionary<int,bool> additiveIndex;
		[SerializeField] private SerializedDictionary<int,AvatarMask> avatarMasks; 
		[SerializeField] private bool allowDeathAnimation;
		
		[Inject] private IEntityOverride _override;
		[Inject] private IHealth _health;
		

		private string lastAnimationName;
		public override void OnStart()
		{
			base.OnStart();
			_health.OnSetAlive += OnSetAlive;
			UnityEntity.AddListener<string>(Constant.Animation.Play,Play);

			animancerComponent.Layers[2].IsAdditive = true;

			foreach (var pair in avatarMasks)
			{
				animancerComponent.Layers[pair.Key].SetMask(pair.Value);
			}
		}

		private void OnSetAlive(bool obj)
		{
			if (obj)
			{
				//_override.RemoveOverride(-1);
				animancerComponent.Layers[8].Stop();
			}
			else if( allowDeathAnimation)
			{
				Play("Death",false,8);
			}else if (allowDeathAnimation is false)
			{
				if (string.IsNullOrEmpty(lastAnimationName) is false)
					_override.RemoveOverride(lastAnimationName);
				foreach (var x in animancerComponent.Layers)
				{
					x.Stop();
				}
			}
		}
		public void Play(string animationName)=>Play(animationName,false);
		public void Play(string animationName, bool isAdditive,int layer = -1)
		{
			if (animationClips.TryGetValue(animationName, out var clip) is false) return;
			
			layer = layer is -1 ? isAdditive ? 2 : 1 : layer;
			if(layerIndex.TryGetValue(animationName,out var index))
				layer = index;
			isAdditive = additiveIndex.TryGetValue(layer, out var value) && value || isAdditive;
			
			if (string.IsNullOrEmpty(lastAnimationName) is false)
			{
				_override.RemoveOverride(lastAnimationName);
			}

			if (isAdditive is false)
				_override.AddOverride(animationName);
			animancerComponent.Layers[layer].Stop();

			var randomClip = clip.Random();

			if (randomClip is null) return;
			var state = animancerComponent.Layers[layer].Play(randomClip, 0.2f);
			state.Events.OnEnd += RemoveOverride;
			lastAnimationName = animationName;
			return;

			void RemoveOverride()
			{
				state.Events.OnEnd -= RemoveOverride;
				animancerComponent.Layers[layer].Stop();
				UnityEntity.Invoke(Constant.Animation.OnPlayEnd,animationName);
				if (isAdditive is false)
					_override.RemoveOverride(animationName);
			}
		}
	}
}